Boolean Operators are commands that most databases use to enable users to search for multiple concepts that form a complex topic. When you put a Boolean Operator into a database, the computer realizes that is being asked to do something.
There are Three Boolean Operators: AND, OR, NOT.
AND narrows a search by retrieving the intersection between topics. Apples AND oranges would only get those that have both types of fruit.
OR broadens a search by retrieving either topic. OR is especially important for grouping synonyms. Apples OR oranges would get anything that had either type of fruit.
NOT narrows a search by excluding entire categories of information. Apples NOT oranges would exclude things that had oranges, even if they also had apples.
